51399245204 has 24 divisors (see below), whose sum is σ = 95273635968. Its totient is φ = 24179281280.

The previous prime is 51399245179. The next prime is 51399245237. The reversal of 51399245204 is 40254299315.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60389 + ... + 326259.

It is an arithmetic number, because the mean of its divisors is an integer number (3969734832).

Almost surely, 2^51399245204 is an apocalyptic number.

It is an amenable number.

51399245204 is a deficient number, since it is larger than the sum of its proper divisors (43874390764).

51399245204 is a wasteful number, since it uses less digits than its factorization.

51399245204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268735 (or 268733 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 51399245204 in words is "fifty-one billion, three hundred ninety-nine million, two hundred forty-five thousand, two hundred four".